Safety lock for wood-heel-turning machines



E. w. BAILLY SAFETY LOCK FOR WO OD HEEL TURNING MACHINES March 31. 1925.

I Filed Oct. 2 1924 Patented Mar. 31, 1925,

nrrs stares EIVIILE W. BAILLY, OF HAVERHILL, MASSACHUSETTS.

SAFETY LOOK FOR VJOOD-HEEL-TURNING- MACHINES. 7

Application filed October 29, 1924. Serial No. 746,501..

To all whom it may concern:

Be it known that EMILE W'. BAILLY, a citizen of the United States, and resident of Haverhill, in the county of Essex and State of Massachusetts have invented an Improvementin Safety Looks for lVood-Hecl-Turning Machines, of which the following is a specification.

This invention relates to that class of wood heel turning machines, or machines for shaping the sides and back of the heel blank, in which the heel blank holder is swung horizontally in relation to a pair of rotary cutters, successively, a machine of this character beingillustrated in my prior Patent #1, l72,625.

In these machines the jack, or heel blank holder, is mount-ed so that it has free longitudinal and lateral movements and also is pivoted to swing vertically. It is also guided in its lateral, longitudinal and tilting movements by cams, the cam which controls.

the tilting movement in this type of machine being a somewhat elliptically shaped track usually arranged in a position slightly inclined to the horizontal, and acting to support the jack at its outer end. In the machine of my said patent, this track is directly engaged by an inclined foot, which is adjusted in inclination to vary the extent of tilting movement of the jack, and, in some other machines the inclination of the track itself is varied, as in Russ Patent #1247,- 335. In all machines of this type it is customary for the operator, when he has finished the operation on a blank, to move the jack to the middle position with relation to the cutters, and as far away from the cutters as possible, and then to remove the blank which has been operated on and clamp another blank in the jack while the jack is in this position. As thus held, a slight inward pressure on the jackwill act to move it horizontally, so as to carry its blank holdingend towards one or the other of the cutters and a slight lifting action on the outer end of the jack will have the same effect. As the operator holds the blank'in position in the jack with one hand and clamps it, while thus held, with the other, it has sometimes happened, from various causes, such as by the effort of clamping, or by reason of the operator being pushed, or by carelessness, that the jack is moved from this position so as to move the hand of the operator which is holding the blank into contact with one of the cutters, with consequent serious results. i

The object of my invention is to provide a means for locking the jack in the position in which it is held while changingthe blank,

so that it cannot, while thus locked, be moved either horizontally, or vertically, and which will cause the jackto be locked automatically when it is moved to this position and the operator removes his hand from the operating handle of the jack, and which will not interfere with the normal operation of the machine, or in any way reduce the speed of its production. Also to provide a looking means which may be readily appliedto all existing machines of the type above referred to, at a reasonable cost. j

I accomplish these objects in the manner hereinafter describedand as illustrated tn the accompanying drawings in which:

Fig.1 is a plan view of a machine of the type above referred to, containing a preferred embodiment of my invention.

Fig. 2 is a central vertical section thereof at line m00 of Fig. 1. i

Fig. 3 is a detail sectional view locking, device.

Figs. t and 5 are detail views of the middle portion of the track. I

The type of heel turning machine illustrated, in connection with'which a preferred embodiment of my invention isshown, is substantially the same as that illustrated in my said prior patent and comprises the pair of cutters 2 and 4, rotatable about vertical of the axes in the frame 5, and the jack base 6 connected by a horizontal pivot to a bracket 8, which is in turn mounted on a vertical pivot in one end-of a link 12, the opposite end of whichis mounted to swing horizontally about the vertical pivot 14, mounted in'a'bracket on theframe." Thej-ack is pro- V vided with any suitable blank-clamping means 15-, the base member of which is directly over the bracket 8, and with a handle 16 at its opposite end by means of which the jack 'is manipulated when the turning operation is performed. ported at its outer end by the somewhat elliptically shaped track 26, which is fixed on the frame in an approximately horizontal position, in which its upper edge is The jack is sup- I usually in a slightly inclined plane, and by a foot 30, which is pivoted at 32 to the bot tom portion of the jack and rests directly on the edge of the track, the inclination at which the engaging face of the foot is held being varied by adjusting a hand screw 34;. According to my invention I provide a plate 36, which is secured by bolts 38 to the inner or back side of the track 26, at the middle thereof, the holes through which the bolts are passed being somewhat elongated to permit slight vertical adjustment tl' ereof, and said plate is provided with an obliquely extending aperture 39, wnich is equidistant from the cutters'2, 4. As in all, or nearly all positions of adjustment of plate 36, the aperture 39 therethrough will be partly located below the level. of the upper edge of the track 26, a notch 40 is formed in said track in line with said aperture, when plate is adjusted to its lowest position. A

locking bolt 42 is mounted to slide longitudinally in the jack base at a downward inclination from front to rear of approxt mately 45, said bolt extending through the handle portion of the base and through the foot 30, and being movable between a posi tion in which its lower end is above the bearing face of said foot and a position in which it extends some distance beneath said face. ,Said bolt is actuated. downwardly by means of a spring 44-, which is arranged thereon between a shoulder 13, formed by reducing the diameter of the upper portion of the bolt, and a guiding plug 45 in the upper end of the hole in which the bolt slides,.and the reduced portion of said bolt is extended above the upper side of the base and is provided with a cross pin 46, at its upperend. V A handle 47 is mounted on a pivot 48 in the handle portion of the jack, said handle having a forked end portion 4-9, which extends beyond its pivot at each side of the upper portion of the bolt 42 in position to engage the pin $56, so that, when the handle is depressed, the bolt 42 will be drawn upward from the full line position, to the dotted line position of Fig. 2, in which latter position the handle 47 will lie close to the handle 16 of the jack and the end of the bolt will be above the under side of the foot 30.

lVhile performing the turning operation, the operator grasps the handles 16 and 47, and presses the handle 47 down on the handle 16, thereby moving the bolt 42 up to its inoperative position, so that the action of the foot 30 on thetrack 26 will not be inter-. fered with, and the jack may be swung freely from side to side. lVhen the operationis finished, the jack is moved to the middle position and drawn away from the cutters as far as possible, as shown in Fig. 1. The plate 36 is so arranged that when the jack is in this position, the bolt 42 will be held in line with the opening 39 therein, and also the notch 4-0 in the track. Consequently, when the handle 4;? is released, the bolt 42 will be forced downward by its spring, so that its lower end portion will pass through the notch 40 and aperture 39, as shown in Figs. 2 and 3, in which position the jack will be firmly locked against movement in all directions, so that it cannot be moved either sidewise or lengthwise, or

swung upward, preventing all possibility ofmovement of the ]ack while the operator 1S- changing the blanks. After the fresh blank has been clamped in position, the operator again depresses the handle at, as he grasps the handle 16, and unlocks the ack, so that it may be moved in the usual manner. If the handle 47 should be released shortly before the jack is moved to its middle position, the end of the bolt 42 will ride on the top of the track, or of the plate 36, until the ack is moved into position to be locked. The hole in the foot 30 through which the bolt passes is. enlarged sufiiciently to permit adjustment of the foot to the necessary extent and the plate aperture 39 is also sufli c'iently' enlarged to permit the bolt to pass therethrough in all the angular positions in which the bolt may be held due to various positions of adjustment of the foot 30. It will be apparent that the construction is such that it may be readily applied to existing machines.

I claim- 1. In a wood heel turning machine, a pair of cutters, a blank holder mounted for universal horizontal movement to present the blank tothe cutters, a track arranged to support the holder and to vary the vertical angular position thereof as it is moved horizontally in operative relation with the cutters, and means for locking said holder to said track when in its middle position thereon and withdrawn from the cutters. 2. In a wood heel turning machine, a pair of cutters, a blank holder mounted for lateral and longitudinal movements horizontally to present the blank to the cutters, atraok arranged to support the front portion of the holder and hold it in different angular positions to the vertical as it is movedlaterally, a manually controlled look ing device on the holder, and means carried by the track arranged to be engaged by said locking device when said holder is in a middle position with relation to the cutters and withdrawn therefrom to lock the holder against movement towards the cutters. e

3. In a wood heel turning machine, a

pair of cutters, a blank. holder mounted for lateral and longitudinal movements hori angular positions to the vertical as it is moved laterally, a locking bolt slidably mounted on said holder, means on the track having an aperture arranged to receive said bolt when the holder is in its middle position with relation to the cutters and withdrawn therefrom, to lock the holder against movement horizontally and vertically, and manually controlled means for moving said bolt to and from its locking position.

4:. In a wood heel turning machine, a pair of cutters, a blank holder mounted for lateral and longitudinal movements horizontally to present the blank to the cutters, and having a hant le at its outer end for controlling the movement thereof, a track arranged to support the holder and control its inclination with relation to the cutters, a locking bolt slidably mounted in said holder and spring actuated to its operative position, a handle adjacent the handle of the holder for holding the bolt in its inoperative position, means on the track at its middle portion having an aperture arranged to receive said bolt when the holder is in its middle position with relation to the cutters and withdrawn therefrom to lock said holder against movement towards the cutloclring bolt slidably mounted in the holder, 7

in position to move obliquely downwardly and rearwardly, means on the track having a recess arranged to receive the lower end portion of the bolt, as it is moved downwardly when the holder is in its middle position and withdrawn from the cutters, to lock the holder against horizontal and vertical movement towards the cutters, manually operated means at the front end of the holder for lifting the bolt to unlock the holder, and actuating means for movingthe bolt to locking positionwhen released.

In testimony whereof, I have signed my name to this specification. 3

EMILE W. BAILLY. 

